Ingot mold construction



May 5, 1931. R. G. REDMANN' 1,804,275

INGOT MOLD CONSTRUCTION Filed April 1, 1950 INVENTOR.

BY @QWQ;

A TTORNEY Patented May 5, 1931 UNI-TED STATES ROBERT G. IREDMANN, OFBRISTOL, CONNECTICUT I INGOT MOLD CONSTRUCTION Application filed April1, 1930. Serial No. 440,842.

My invention relates to improvements in ingot mold construction,pertaining to molds of generally the same form and adapted to the sameuses as those that are shown and described in Patents No. 1,730,686 andNo. 1,739,769, issued respectively October 8, 1929, and December 17,1929, being of cast iron and used for casting non-ferrous metal ingotsof rectangular form of cross section,

and which comprise mold parts that in the closed position haveoverlapping faces at the sides, and in which the limit of the closingmovement of the parts is determined by opposed flat faces on the twoparts that extend for the entire length thereof from the bottom to thetop, and the object of my improvement is the provision of improveddetails for the joint between the two parts, particularly in the facesmentioned, so that the limit mentioned is determined by fiat faces ofrelatively diminutive extent and distributed along the length, theremaining and major portions of said faces being inclined and generallydivergent and given unique forms so as to substantially remove andovercome the objectionable results that have heretofore been encountereddue to the accumulation of deposit from the liquid brush or swab that isapplied to the mold to facilitate removal of the casting.

In the accompanying drawings Figure 1 is a front elevation of myimproved ingot mold, with parts of the front part broken away.

Fig. 2 is an edge view of the same.

Fig. 3 is an off-set transverse sectional view through different partsof the joint structure of the two mold parts, being on the line 33 ofFig. 1.

In the use of cast iron molds for casting ingots of non-ferrous metalsthe operator brushes or swabs a liquid solution to the face of the moldto facilitate the removal of the cast bar from the mold. Excess solutionruns over at the sides and onto the opposed contact faces; as the moldis heated under operating conditions deposit from said liquid burns onand builds up during successive uses in the mold structures in commonuse; this condition preventing the proper closing of the mold parts;thus a lack of uniformity of castings follows; also, there are extrastrains on the mold locking parts, such as the hooks and holding lugs.

My improved ingot mold comprises the front part 10 and the back part 11hingedly connected by their lower ends and surmounted by the pouring cup12 that is carried generally by the back part 11 and is positioned abovethe mold cavity. Holding means at the sides hold the parts closed, suchas the hooks 13 on the back 11 that cooperate with lugs 14 on the front10. The boundary faces for the mold cavity 15 comprise the fiat frontface 16 of the front part 10; the flat rear face 17 on the back part 11;and on the two sides are the side faces 18 that, as shown, are providedby the side wall structure 19 of the front part 10. Said side wallstructure 19 is projected rearwardly beyond the rear face 17 so thatextensions of. the side faces 18 overlap opposed facesQO at the sides ofthe back part 11 for effecting'the seal of the mold cavity 15.

In the usual form of construction the rear end faces of the side wallstructures .19 .are faced off fiat and plain transversely and areopposed to and in face to face contact with similar faces on the back11.

In the present construction, a brief description would suflice to saythat such usual form of construction is retainedto a relatively smallextent sufiicient to positively limit the closing movement of the moldparts, and to this extent only, as by means of suitable contacting lugstructures distributed along the length of the mold. Along the othermajor portions of the length the opposed faces are cut-away or relievedin 'some way or other. As shown, the two opposed faces are shapeddifferently.

Thus the rear face 21, on the back part 11, is simply inclined so as toform with the overlapping face 20 a corner 22 that is in the form of anobtuse angle.

The side wall structure 19 terminates short of the corner 22, beingseparated therefrom by a short clearance space 23, and the form of theend face thereof comprises a short or narrow face 24 that extendsoutwardly laterally from the side face 18 in each case. Said narrow face24: meets the side face to form a right angled corner 25. From the outerend laterally of the narrow face 24 an inclined face 26 completes theend face structure of the side wall structure 19.

The end face structures described serve to ensure a minimum of depositof foreign matter on the opposed faces of the mold parts; provide meansfor expelling such ma terial from the cooperating faces; the diminutiveclearance spaces 23 preventing obstructions at the opposing corners orthe like; provide for relatively free expansion of the sides of the moldparts; and thus provide effective means for generally ensuringuniformity of product. Thus the duty of the clamping devices underconditions of use is relieved.

The limiting lug structures for determining the closing position of themold parts may be of any proper form and located as desired. Generallythe bottom end of the mold cavity would be closed in the usual manner byclose fitting faces of the two mold parts, and such faces 28 wouldprovide for positioning of the lower end portions of said mold parts. Aset of lugs 27 would be provided at the upper end in all cases in thepreferred form. Intermediate lugs 29 at the middle as shown in molds ofappreciable length and the number and location of such intermediate lugswould be provided to meet certain conditions. Any form of lugs may beused so as to provide opposed fiat faces 30 for contacting in the closedposition. In machining and finishing the opposed flat faces in the oldform of structure a relatively extensive operation is involved This partof the work is now confined to the dimunitive flat faces 30 distributedaround the border of the mold.

In some cases the lugs can be provided in the form of loose pieces thatcan be removed after pouring, after the bar is partly set.

I claim as my invention In ingot mold construction two mating partsenclosing mold cavity side walls of said cavity being integral with oneof said parts and extending beyond the said cavity, the other of saidparts comprising a body part that fit's between said side walls andlateral extensions that are opposed to the end faces of said side walls,said end faces and lateral extensions comprising relatively diminutivefinished cooperating spot-like lug structures that make face to facecontact in the closed position of the mold for limiting such closure andall other portions of said end faces and lateral extensions that aregenerally opposed one to the other being gouged out or cut away so as toprevent contact in such closed position of the mold.

ROBERT G. REDMANN.

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